Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Verification of specific status of pest species allied to Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) using allozyme electrophoresis.

Abstract

Adult flies of five pest species, Bactrocera dorsalis (Hendel) (from Thailand), B. carambolae Drew and Hancock and B. papayae Drew and Hancock (from Malaysia), B. philippinensis Drew and Hancock and B. occipitalis (Bezzi) (from the Philippines), of the B. dorsalis complex were analysed at 17 enzyme loci by allozyme electrophoresis using cellulose acetate plates as a supporting medium. Ten enzyme loci (AO, GPDH, 6GPDH, IDH, MDH-1, ME, MPI, PGI, PGM and TRE) were used to interpret the genetic relationships among the species. The species specific status of B. philippinensis is confirmed, even though this species is morphologically indistinct from B. papayae. The genetic differences between B. carambolae and B. occipitalis are also recorded. It is also concluded that there was no gene flow between sympatric species B. occipitalis and B. philippinensis in Guimaras island (the Philippines); and between B. carambolae and B. papayae (in Malaysia). A phenogram representing the genetic relationship among these species is given.